Enabler II-G Assiste GPS Integration Guide - Farnell
Enabler II-G Assiste GPS Integration Guide - Farnell
Enabler II-G Assiste GPS Integration Guide - Farnell
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Enfora <strong>Enabler</strong> <strong>II</strong>I-G<br />
Modem <strong>Integration</strong> <strong>Guide</strong><br />
6.6.28. Auxiliary Audio input (Pins 49, 51)<br />
The mono FM input (mono FM - VMID) can be amplified by the auxiliary amplifier. This amplifier has a<br />
gain of 4.9 dB. The stereo FM inputs can be amplified as well. The FM right channel is amplified by the<br />
auxiliary amplifier (FM R - VMID) and the left channel by the handset microphone amplifier (FM L - VMID).<br />
The gains are of 4.9 dB. This output is not connected to the ADC input, like the other outputs, but to an<br />
audio output stage through a logarithmic PGA gain stage.<br />
If the analog input is a stereo signal, the FML input corresponds to the analog left channel input and the<br />
FMR/AUXI input corresponds to the analog right channel input.<br />
If the analog input is a mono signal, the FMR/AUXI input has to be used only.<br />
*The Audio mixer interface is for hardware reference only. Currently this feature is not<br />
implemented, but is detailed for future implementation.<br />
PARAMETER Parameter/Conditions Min Typ Max Units<br />
Maximum Input Range Inputs 3 dBm0 (Maximum<br />
353 mVrms<br />
FML<br />
digital sample amplitude with<br />
PGA gain set to 0 dB),<br />
MICAMP gain = 4.9 dB, Single<br />
FML<br />
Maximum Input Range Inputs 3 dBm0 (Maximum<br />
353 mVrms<br />
FMR (= AUXI)<br />
digital sample amplitude with<br />
PGA gain set to 0 dB),<br />
AUXAMP gain = 4.9 dB, Single<br />
FMR (AUXI)<br />
Nominal Reference<br />
Level at FML<br />
Nominal reference level at FML -10 dBm0<br />
Nominal Reference<br />
Level at (AUXI/FMR)<br />
Single AUXI/FMR -10 dBm0<br />
Micro Amplifier Gain for<br />
FML input<br />
Single FML input for FM Stereo 4.9 dB<br />
Auxiliary Amplifier Gain Single AUXIFMR input for FM<br />
4.9 dB<br />
for AUXI/FMR input Stereo<br />
Single AUXI input, low gain 4.9 dB<br />
Single AUXI input, high gain 28.2 dB<br />
Input Resistance at Single AUXI input, AUXAMP<br />
130.5 kΩ<br />
AUXI/FMR<br />
gain = 4.9 dB<br />
Single AUXI input, AUXAMP<br />
gain = 28.2 dB<br />
13.5 kΩ<br />
FM Mono, AUXAMP gain = 4.9<br />
dB<br />
130.5 kΩ<br />
FM Stereo, AUXAMP gain from<br />
2.9 dB to 18.9 dB<br />
36 kΩ<br />
Input resistance at FML FM Stereo, MICAMP gain from<br />
2.9dB to 18.9 dB<br />
36 kΩ<br />
GSM0308PB001 60 Version 1.03– 7/17/2007
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